Stoker.



W. M. STEWART.

STOKER. APPLICATION FILED F233], 1914.

W. M. STEWART.

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APYLHIATKON FILED PEB.7,1914- ,068. Patented Nov. 24, 1914.

3 SHEETS SHEET 3.

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I. if, u Z (Hwwntu UNITED STATES PATENT OFFICE.

WALTER M. STEWART, OF OTTUMWA, IOWA.

| STOKER.

Specification of Letters Iatent.

Patented Nov. 24, 191%.

Application filed February 7, 1914. serial No 311,333.

To all whom it may concern Be it known that I, WALTER M. STEWART, a citizen of the United States, residing at Ottumwa, in the county of Wapello and State of Iowa, have invented certain new and useful Improvements in Stokers, of which the following is a specification.

This invention relates to a mechanical stoker, and the principal object ofthe invention is to provide a stoker which is so constructed that coal may be fed to any part of the fire box desired, and to so construct the stoker that vibrations will not cause the pipe of the stoker to be broken or bent.

Another object of the invention is to so construct the stoker that the feeding elements may be operated by engines ofthe steam actuated type, one engine being a reciprocating engine and the other being a turbine engine.

Another object of the invention is to provide a stoker which will be comparatively simple in construction and which will have few parts, and thus not be liable to need very much repairing.

Another object of the invention is to so construct the stoker' that it will take up a very small amo"nt of space and thus not be in the way.

This invention is illustrated in the accompanying drawings wherein- Figure 1 is a view showing the stoker in side elevation and mounted in an operative position. Fig. 2 is a longitudinal sectional view through the stoker; Fig. 3 is a top plan view of the stoker; Fig, 4 is a sectional view taken along the line 41 of Fig. 1; Fig. 5 is a sectional view taken along the line 5-5 of Fig. 1; Fig. 6 is a sectional "iew taken along the line 6-6 of Fig. 1; Fig. 7 is a sectional view taken along the line 77 of Fig. 1.

This stoker is mounted with the rear portion positioned beneath thecoal bunker 10 of the tender 11 and the forward portion mounted in the cab 12 of the, engine iri front of the boiler 13. When the forward and rear sections of the stoker are connected, they form a continuous tube made up of the rear section'l, forward section 15, intermediate section 16, and collar 17 positioned between the forward section 15 and intermevided with 14 at a point intermediate its length and ex tends into an outlet opening formed in the bottom of the bunker 10 so that coal may pass from the bunker into the section 14. A plunger 22 which resembles a piston is slidably mounted in the rearsection 14 and has its inner ends provided with spurs 23 which engage the coal.

In order to operate the plunger 22 there has been provided a driving rod 24 which is pivotally connected with the outer end of the plunger and has its outer end eccentrically connected with a disk- 25 rigidly mounted upon a driven shaft 26. This shaft 26 is I rotatably mounted in bearings formed at the upper ends of the standards 27 and carries a disk 28 with which the piston rod 29 of the steam engine 30 is eccentrically connected. The valve 31 of the steam engine 30 is operated by means of a rod 32 which is connected with the eccentrical disk 33 by means of the collar 34. It will thus be seen that this steam engine will rotate the shaft 26 and cause the plunger 22 to be reciprocated in the section'14. A pipe 35 is pro- -vided for conveying steam to the valve 31.

The forward section 15 and collar 17 are supported by the standards 36 and are proannular ribs 37 which rest in the pockets 38 at the upper ends of the standards 36. A lever or handle 39 is provided so that the forward section and collar may be readily rotated. The feeding propeller 40 is rigidly mounted upon the shaft 41 which leads from a turbine engine mounted in the housing 42 and it will thus be seen that when Steam passes through the pipe 43 and rotates the turbine, the feeding propeller will be rotated to feed the coal through the forward section 15. A door 44 is carried by the shaft the pipe into the fire box 45 upon the upper end of which there is socnicrl the handle 46. This handle -15 is connected with. a lever l7 by means of a link 48 and 12 ill thus he seen that when the lever is I'-'i:"i\((l upon its supporting brackets 49, mt door will he moved to guide the passage of the ii iii out of the Stoker.

The collar 17 is connected with the forward section 15 by means of a hinge 50 and the forward section is provided with a iiange 51 which extends beneath the collar and prevents coal from leaking between the collar and forward section. The intermediate section 16 fits into the collar 17 and is provided with a pin 52 which extends throx h a slot 533 formed in the collar. T he rear end 54 of the intermediate section 16 is flared to form an enlarged mouth which receives the forward end of the rear section, the rear section being held in the mouth 54 by means of the chains 55.

In the operation of this device, the intermediate section 16 is connected with the rear section after the tender has been coupled to the engine, and the forward section is then swung down to the operative position that the collar 17 will extend into the forward SQCtlOIIlll and the forward end of the forward section will extend through the door-way 58. As the plunger 22 moves in the rear section, coal will he forced through the rear section and through the intermediate section into the forward section. The revolving propeller 40 will engage the coal and force the coal into the forward end pon tion of the forward section from which it will out into the fire box. By turning the forward section by means of the handle 39 and adjusting the door 44 by means of the le\ er 4?. the coal can be directed into any portion of the fire box desired and thus the coal can be evenly distrihutcd. After antllcient :oui has been fed to the fire. or wh n it i no longer desired to use the striker. the forward section can he tilted hack so that it will rest aeuinst. the tendon and the m or 5f) oF the holler can e closed. This stoli r has l cen sliown applied to a in r ad cnginc and tender but i't is o'miona that it would i ted in the engine room of a: factory or i cr hnilding for conveying coal from thicoai loins to the firc box of the luuilcr or furnace. If it is desired to i vnorc thc st her, the s ctions of the striker may he easily removed fr m the standards the. UUHFE sc iiaratcii. 'l he stolicr can I wed in a cnmparativclv small :iountot' space or the various parts may no placcd in separate receptacles fl storage pill {M9505 i are thus provided a Stoker which mple in construction and whi h is not to very easily out of order or h: some broken. It will also be seen that l have provided a Stoker which will be easy to assemble and easy to take down when desired.

What is claimed is:

1. A stoker comprising a conduit including a rear section )IOVldQfjl with an inlet, supporting means or said rear section, a forward section having an open outer end, a collar. said forward section belo hinged to said collar and provided with a ange extending beneath said collar when said forward section is in a lowered position, means for supporting said forward section and collar for permitting rotary motion .of said. forward section and collar. an intermediate section connecting said collar with said rear section, feeding means in said rear section in operative relation to the inlet thereof, feeding means in said forward section, and means to rotate said forward section and collar.

2. A stoker comprising a conduit includ ing a rear section provided With an inlet, a forward section, a collar, said forward section heing hingedly connected to said collar, an intermediate section extending into said collar. a pin carried by said intermediate section and extending through a. slot formed trai'isversciy in said collar. the opposite end portion of said intermediate section inclosing the end of said rear section, means for supporting said ,eollar and forward section for perm tting rotary motion of the same, feeding means in said rear sec tion and forward section... and means for rotating said forward section and collar and swinging said forward section to a raised position.

3. A stolrer comprising a conduit including a rear section, a forward section, a collar hingerlly connected to said forward sec tion. an intermediate section having one end portion cxtcrulirig into said collar. m ans for prcvcnting the o'illnlrasval of said intermcdiate section from said collar liut perinittinn u: iar to rotate upon said int rmediat ection. the opposite end portion of aid intcrmc liate secti n being tlared and inclwing one end of said rear section. yield- .n;--- connecting, il inte mediate secl1 said rear section lllltfillFi fflf rotati .ly supporting said c liiir and forward Fliiluf. means for r tating: said collar and forward ction and moving said torward ci-lion l a raised position. and feeding 1,1-1a,gaa g porting meansfor said collar and the for- In testimon whereof I affixmy signature ward and rear sections of said conduit, an in presen0e o two witnesses. I arm carried by said forward section for I NALTER M. STEWART. swinging said forward section to a raised Witnesses:

5 position, and feeding means in said rear JOHN A. S. ANDERSON,

section and forward section. O. -H. MICHAEL. 

